BS EN 61131-2:1995 Programmable controllers - Part 2. Equipment requirements and tests
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This International Standard applies to programmable controllers and their associated peripherals such as programming and debugging tools (PADTS), test equipment (TE) and man-machine interfaces (MMIS), etc.
Equipment covered in this standard is intended for use in overvoltage category II (see IEC 364-4-443), in low voltage installations, where the rated mains supply voltage does not exceed 1 000 V a.c. (50/60 Hz), or 1 500 V d.c., for the control and command of machines and industrial processes.
Programmable controllers and the associated peripherals are considered as components of a control system and may be provided as enclosed or open equipment. Therefore, this standard does not deal with the automated system in which the programmable controller system is but one basic component among many others including its application program.
Since programmable controllers are component devices, overall automated system safety including installation and application is beyond the scope of this standard. For further information, refer to IEC 1131-4 which is intended to help users in reducing the risks. How- ever, electrical noise immunity and error detecting of the PC-system operation such as the use of parity checking, self-testing diagnostics, etc., are addressed.
ICS 25.040.40 Industrial process measurement and control
ICS 35.240.50 IT applications in industry
ISBN 0580237257
Language:
English
Subject Keywords:
Electrical safety; Control systems; Interfaces; Electrical testing; Testing; Environmental testing; Process control; Automatic control systems; Controllers; Quality control; Control equipment; Test equipment; Type testing
